[Diuron]
3-(3,4-Dichlorophenyl)-1,1-dimethylurea CAS[330-54-1]
Trade name; diuron (J, I, A, B): Dailon, DCMU, DMU, Karmex
Chemical formula; C9H10Cl2N2O
Purpose for use; Phenylurea herbicide
Mode of action: A photosystem II inhibitor that has the potential to inhibit the electron transport chain; interactions with arylhydrocarbon receptor. (ref. ID; 6758)
Toxicity; LD50 (oral): rat 3400 mg/kg
Test organisms;
Green algae (formerly included protozoa): Chlamydomonas reinharditii (ref. ID; 4553, 4565)
Protozoa: Euglena gracilis (ref. ID; 4560)
Nematoda: Caenorhabditis elegans (ref. ID; 6758)

[Ustinex]
Trade name; Ustinex (Amitrole 30% and Diuron 56%)
Purpose for use; herbicide
Test organisms;
Oligochaeta: Aporrectodea longa (ref. ID; 6902)
Oligochaeta: Eisenia fetida (ref. ID; 6902)
Oligochaeta: Lumbricus terrestris (ref. ID; 6902)

[Linuron]
3-(3,4-Dichlorophenyl)-1-methoxy-1-methylurea CAS[330-55-2]
= N'-(3,4-dichlorophenyl)-N-methoxy-N-methylurea
Trade name; Linuron (J, I, A, B): Afalon, Lorox
Chemical formula; C9H10Cl2N2O2
Toxicity; LD50 (oral): rat 4000 mg/kg, mouse 1500 mg/kg
Purpose for use; Phenylurea herbicide
Test organisms;
Protozoa: Acanthamoeba castellanii (ref. ID; 946)

Linuron metabolites
N-(3,4-dichlorophenyl)-N'-methylurea
N-(3,4-dichlorophenyl)-N'-methoxyurea
N-(3,4-dichlorophenyl)urea
3,4-dichloroaniline

Another urea herbicide

[Amitrole]
3-Amino-1,2,4-triazole
Trade name; Amitrole (J, I, A, B): Aminotriazole, ATA, Cytrol, Weedazole
Chemical formula; C2H4N4
Purpose for use; herbicide

[Dymron]
1-(alpha, alpha-Dimethylbenzyl)-3-(p-tolyl)urea] CAS[42609-52-9]
Trade name; Dymron (J): Dimuron, Shouron, Showron, Tolrone
Chemical formula; C17H20N2O
Purpose for use; herbicide
Toxicity; LD50 (oral): rat (male) 4000 mg/kg, mouse (male) 6500 mg/kg

[Methyl dymron]
1-(alpha, alpha-Dimethylbenzyl)-3-methyl-3-phenylurea
Trade name; Methyl dymron (J)
Chemical formula; C17H20N2O
Purpose for use; herbicide
Toxicity; LD50 (oral): rat (male) 5852 mg/kg, (female) 3948 mg/kg
mouse (male) 5000 mg/kg, (female) 5269 mg/kg

[Siduron]
1-(2-Methylcyclohexyl)-3-phenylurea CAS[1982-49-6]
Trade name; Siduron (J, I, A, B): Tupersan
Chemical formula; C14H20N2O
Purpose for use; herbicide
Toxicity; LD50 (oral): rat (male and female) > 7500 mg/kg